Disease, the partner of war, has often caused more deaths in past conflicts between nations than the arms of opposing forces. Conditions favorable to the communication of disease exist wherever large numbers of persons are gathered together; these conditions are intensified when movements of armies and civilian populations are carried out under the stress of war. Soldiers engaged in combat may suffer a lack of food or receive food not properly pre-pared; the men may sleep in cold and rain, and may undergo fatiguing marches which greatly lessen their powers of resistance. Civilians may be congregated for munitions work in areas where housing accommodations are poor, and sanitation facilities are limited. The use of disease as a weapon of war may add to suffering caused by the normal upward trend of disease rates. Dr. Thomas Parran, United States Surgeon General, said on January 12 that “the enemy has planned and in my opinion will use bacteriological warfare wherever possible.”

Warnings of Danger of Wartime Epidemics

A warning that the number of cases of malaria among the armed forces might increase with the occupation of new naval bases acquired from Great Britain was sounded last May, by Dr. Charles S. Stephenson of the Navy's Division of Preventive Medicine. The War Department announced in the autumn that a new type of malaria-transmitting mosquito had been found in Trinidad at the site of one of the bases. For civilians in the United States there is the danger that some of the returning soldiers may become carriers of disease, and may serve as the focus of epidemics in their home communities.

Imminent prospect of an influenza epidemic as severe as that of the first World War was announced in October, 1941, in papers presented before the American Public Health Association by three doctors of the St. Louis Health Division. They noted that influenza had reached epidemic proportions in 25 to 30 per cent of the communities in California in December 1940 and had lain dormant during the summer of 1941, possibly building up its virulence. Nevertheless, the winter of 1941–42 has seen no epidemic of influenza; reports to the United States Health Service for the week ended January 10, 1942, showed only 3,800 cases throughout the nation as compared with 77,820 cases for the corresponding week of 1941.